Came into the office for a full day of work today, and have felt mostly all right this morning.
Had something of a small coughing fit about twenty minutes ago, and while the coughing has subsided, my chest is now hurting again and I'm a bit short of breath at times. Went into the lounge to sit for a bit, just trying to recover somewhat, but am back at the work desk now, and it's still hurting.
Don't know what caused or started the coughing fit. But I really want to avoid any more.